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API 600 Gate Valves

API 600 gate valves, also known as a sluice valve, is a valve that opens by lifting a gate (closure member / disc) out of the path of the fluid which could be liquid or gas. API 600 Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. The gate faces can be parallel but are most commonly wedge-shaped with small angle with the vertical axis (in order to be able to apply pressure on the seating surface). Gate valves are generally designed as per API 600 and API 602 standards.

gate valve cast steel API 600 API 602
API 600 pressure sealed gate valve

Function of API 600 Gate Valves

API 600 Gate valves are widely used to shut off the flow of liquids rather than for flow control (regulation), which is usually done with a globe valve. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low flow resistance. The size of the open flow path generally varies in a nonlinear manner as the gate is moved. This means that the flow rate does not change evenly with stem travel. Depending on the construction, a partially open gate can vibrate from the fluid flow.


Common gate valves are actuated by a threaded stem that connects the actuator (e.g. handwheel or motor) to the wedge (gate). They are characterised as having either a rising or a nonrising stem, depending on which end of the stem is threaded. Rising stems are fixed to the gate and rise and lower together as the valve is operated, providing a visual indication of valve position. The actuator is attached to a nut that is rotated around the threaded stem to move it. Non-rising stem valves are fixed to, and rotate with, the actuator, and are threaded into the gate. They may have a pointer threaded onto the stem to indicate valve position, since the gate's motion is concealed inside the valve. Non-rising stems are used where vertical space is limited. Gate valves may have flanged ends drilled according to pipeline-compatible flange dimensional standards. Sometimes API 600 gate valves are butt welded on pipelines. Gate valves are typically constructed from cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels, and forged steels. All-metal gate valves are used in ultra-high vacuum chambers to isolate regions of the chamber.

api 600 gate valve
stainless steel api 600 gate valves

API 600 & API 602 Gate Valve Applications

Industrial applications such as oil and gas, petrochemicals, chemical, power generation, mining and industries use this valves. What makes this useful is that the design limits flow obstruction. Additionally, there is also a minimal pressure drop. These PAI 600 gate valves are also used in fire fighting applications with some minor chages in design standard and material specifications.

Why Select and Use API600 Gate Valves ?

  • Easy Availibility 

  • Economic Cost

  • Wide Range of Size from 1/2" (half inch) to 32" and above

  • Wide Range of pressure rating capacity from 150# low pressure to 2500# high pressure and above

  • Easy Operation

  • Easy Maintenance and handling

  • Available in Stock and shorter lead times

  • Rigid and Robust Construction

  • Wide Variety of internal trim parts variants

  • Long Service Life

  • ON-OFF Duty only

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Valve General Specifications

  • Size Range – 1/2″ to 36″

  • Pressure Rating – 150#, 300#, 600#, 800#, 900#, 1500#

  • Certifications – IBR, CE, etc.

  • Inspected & Witnessed By third party agencies

  • API Valves, ATex Valves, CE Valves, Process Valves, Gas Valves, Water Valves, Cryogenic Service, Fire Safe

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